Kagaku ninja tai Gatchaman

The country Dokual is rich in Earth's resources. But because it declines to pay supporting money to Galactor, the President's life is threatened. The Science Ninja Team receives a call for help which reaches the ISO. They hide the God Phoenix at the bottom of the sea and secretly go to the President's residence. On the estate, several traps have been laid, but it is explained that they're only there to protect the President. The five of them meet the President, but from the fact that the President holds the cane in the hand opposite the side of his bad leg, they see through the Black Bird's disguise. They are chased away by the traps inside the residence and are locked up by glas shields. Poisonous gas is put in, but because the glas shields are opened when the Black Birds want to shoot them, they escape. But when the five of them go out into the city, they are attacked by the citizens. The Black Birds have been sending out brainwashing radio waves. At that time, a manhole cover opens and a boy rescues the five. He has turned a subway into a playground and therefore has not suffered the influence of the radio waves. He says he wants to go back to his parents' house. Ken and the others follow the sewer, heading towards the source of the radio waves. They fight the Black Birds who have been waiting for them and destroy the mechanism producing the waves. However, Katse appears on the monitor simultaneously and tells them that he has carried off this country's resources. Additionally, he boasts that there was a mechanism which caused the base to blow up as well when the mechanism was destroyed. Despite their escape, the Science Ninja Team can't hide its anger at their first complete defeat. The only help is the figure of the boy being embraced by his mother.